/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/HierarchyEditor/NiagaraHierarchyViewModelBase.h
This will copy the section element itself
void DuplicateSectionFromOtherRoot ( const [UNiagaraHierarchySection](API\Plugins\NiagaraEditor\ViewModels\HierarchyEditor\UNiagaraHierarchySection) & SectionToCopy )